The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2016
Filed:
Feb. 13, 2013
Bhp Billiton Ssm Development Pty Ltd, Perth, Western Australia, AU;
Houyuan Liu, Henderson, NV (US);
Omar Yesid Caceres Hernandez, Herriman, UT (US);
Renato Antonio Loaiza Aguilar, Cordoba, CO (US);
Carolina Isabel Meneses Rodriguez, Cordoba, CO (US);
Ruben Rangel De Hoyos, Cordoba, CO (US);
Illich Alvarez Mercado, Cordoba, CO (US);
CERRO MATOSO SA, Bogota, CO;
Abstract
A process for the production of a high grade nickel product including the steps of: a) providing at least one heap of a nickeliferous lateritic ore and leaching that heap with a suitable lixiviant, preferably sulfuric acid solution, to produce a nickel rich pregnant leach solution (PLS); b) subjecting the PLS to an impurity removal step to precipitate ferric iron, and preferably partially precipitate aluminum and chromium as hydroxides; and c) recovering a high grade nickel product from the PLS preferably by either nickel ion exchange, solvent extraction, electrowinning, conventional multi-stage neutralization, pyrohydrolysis or sulfidation.